先(xian)世系江西(xi)彭澤人,曾祖(zu)父曾遜,祖(zu)父曾輝。父曾璠(fan),嘉靖四十(shi)一年(nian)(nian)壬(ren)戍(shu)科進士。曾省吾(wu)生于嘉靖十(shi)一年(nian)(nian)(1532年(nian)(nian)),嘉靖三(san)(san)十(shi)五年(nian)(nian)丙(bing)辰科進士。隆慶末年(nian)(nian),以右(you)(you)僉都(dou)御史(shi)巡撫四川(chuan),《明史(shi)稿》稱其“嫻將略,善治邊(bian)”,“蒞事精勤,多有建白”。萬歷(li)元年(nian)(nian),四川(chuan)敘(xu)州土司都(dou)掌蠻叛亂,曾省吾(wu)薦劉(liu)顯(xian)率領官兵十(shi)四萬出征,“克寨六(liu)(liu)十(shi)余,俘(fu)斬(zhan)四千六(liu)(liu)百名,拓地四百余里,得諸葛銅(tong)鼓九十(shi)三(san)(san)”。萬歷(li)三(san)(san)年(nian)(nian)六(liu)(liu)月,升兵部右(you)(you)侍(shi)郎。
張居(ju)正死后(hou),曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)受到牽(qian)連,浙(zhe)江道監察御史王國彈(dan)劾曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)“勾結馮保,相倚為奸”,“送(song)馮保金銀若干兩,圖謀(mou)升官(guan)”,戶科給事(shi)中(zhong)(zhong)王繼光疏(shu)參曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)“十(shi)罪”。高拱(gong)《病(bing)榻遺言》說:“隆慶六年,曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)授意其門生(sheng)、戶科給事(shi)中(zhong)(zhong)曹(cao)大(da)野彈(dan)劾高拱(gong),并(bing)許以高官(guan)厚(hou)祿。”。萬(wan)(wan)(wan)歷十(shi)年十(shi)二月(yue),被(bei)勒令致仕。萬(wan)(wan)(wan)歷十(shi)二年四月(yue),邱橓與錦衣衛都指揮曹(cao)應龍(long)、司禮(li)監太監張誠(cheng)前(qian)往張家(jia)抄家(jia),張居(ju)正長(chang)子(zi)張敬修被(bei)屈(qu)打成招,供出曾(ceng)(ceng)(ceng)(ceng)經向曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)、王篆(zhuan)、傅作(zuo)舟三家(jia)轉移、藏匿(ni)財產(chan)(chan),約值銀三十(shi)萬(wan)(wan)(wan)兩。張敬修最(zui)后(hou)自縊(yi)死,臨死前(qian)寫(xie)下(xia)一絕命書(shu)。丘橓派人查封(feng)曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)等人家(jia)產(chan)(chan),并(bing)將曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)、王篆(zhuan)法辦,“曾(ceng)(ceng)(ceng)(ceng)角(jiao)巾青衣,王直囚服(fu)乞哀,中(zhong)(zhong)官(guan)杖之”。萬(wan)(wan)(wan)歷十(shi)二年三月(yue),工科給事(shi)中(zhong)(zhong)唐(tang)堯(yao)欽上書(shu)要(yao)求重(zhong)懲曾(ceng)(ceng)(ceng)(ceng)省(sheng)(sheng)(sheng)吾(wu)(wu)。萬(wan)(wan)(wan)歷十(shi)二年十(shi)月(yue),籍沒家(jia)產(chan)(chan),原籍為民(min),永不敘用。著有《確(que)庵曾(ceng)(ceng)(ceng)(ceng)先生(sheng)西蜀平蠻全錄》(北(bei)京(jing)圖書(shu)館古(gu)籍珍本叢刊,第9冊(ce),書(shu)目文獻出版社(she)1988年),《千弓壩石橋記》等。